Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1154 | 1089 | 1194 | 1169 | 1205 | 1169 |
Tmin | 1157 | 1088 | 1195 | 1168 | 1207 | 1169 |
Duration of sunshine | 400 | 363 | 431 | 448 | 368 | 419 |
Precipitation | 186 | 168 | 186 | 181 | 186 | 180 |
Humidity/Visibility | 185 | 167 | 185 | 179 | 184 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1205 | 1209 | 1191 | 1231 | 1194 | 1224 |
Tmin | 1205 | 1209 | 1193 | 1232 | 1198 | 1224 |
Duration of sunshine | 393 | 465 | 443 | 457 | 447 | 464 |
Precipitation | 185 | 188 | 210 | 215 | 212 | 217 |
Humidity/Visibility | 181 | 184 | 207 | 210 | 206 | 215 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |